问题描述
我在Teamcity的构建日志中有一个警告。我已经将我的CI服务器上的Xcode从7.3.1更新为8。该步骤成功运行，但是我有：
I have a warning in my build log in teamcity. I've updated Xcode on my CI-Server from 7.3.1 to 8. The step run successfully but I have this:
[Step 3/3] Starting: /Users/teamcity/local/teamcity-build-agent/temp/agentTmp/custom_scriptxxxxxxx
[Step 3/3] in directory: /Users/teamcity/local/teamcity-build-agent/work/yyyy
[Step 3/3] 2016-10-11 09:04:41.706 xcodebuild[18180:5010256] CoreSimulator is attempting to unload a stale CoreSimulatorService job. Detected Xcode.app relocation or CoreSimulatorService version change. Framework path (/Applications/Xcodes/Xcode_8.0.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework) and version (303.8) does not match existing job path (/Applications/Xcodes/Xcode-7.3.1.app/Contents/Developer/Library/PrivateFrameworks/CoreSimulator.framework/Versions/A/XPCServices/com.apple.CoreSimulator.CoreSimulatorService.xpc) and version (209.19).
[Step 3/3] 2016-10-11 09:04:41.961 xcodebuild[18180:5010256] Failed to locate a valid instance of CoreSimulatorService in the bootstrap. Adding it now.
如何解决此警告？
推荐答案
我遇到了同样的问题。我必须在Jenkins服务器中同时运行Xcode 7（以构建旧版本）和Xcode 8（以构建当前的develop分支），而我一直都在遇到问题。
I had the same issue. I've to run both Xcode 7 (to build old version) and Xcode 8 (to build current develop branch) in my Jenkins server and I was having the issue all the time.
解决方案：
launchctl remove com.apple.CoreSimulator.CoreSimulatorService || true
发生这种情况是因为，即使您退出了模拟器应用程序，该服务仍在运行。需要上述命令来删除名为 com.apple.CoreSimulator.CoreSimulatorService 的服务。 || true 是为了避免该服务未运行时失败。
This happens because, even if you quit the simulator app, the service is still running. The above command is needed to remove the service called com.apple.CoreSimulator.CoreSimulatorService. The || true is to avoid failure when that service is not running.
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